baber/WOPTO huggingface dataset:
Patent GB-1357223-A (GB)
Title: Photographic camera
IPC: G03B7/081
Filed: 1971-06-22
Abstract: 1357223 Photographic camera exposure control EASTMAN KODAK CO 22 June 1971 [22 June 1970] 29181/71 Heading G2A A photographic camera in which the aperture and shutter time controlled by photo-responsive means 30 has a warning lamp 122 which is illuminated only when the scene illumination falls below a predetermined value and only when the camera shutter is open. The photo-responsive means comprises two photo-conductive cells 98, 102 mounted on a common substrate, the first cell 98 forming an RC timing circuit with a capacitor 100, the junction 97 there between being connected to an input 96 of a trigger circuit 92 so as to energize an electromagnet 94 at the initiation of an exposure. The second cell 102 forms a voltage divider circuit with a variable resistance 106 so that the voltage at junction 104 is functionally related to the level of illumination incident on photo-resistor 102. This voltage is fed to an aperture control circuit 110, e.g. a differential amplifier, having a servomotor 36 which controls the diaphragm blades, and to a second trigger circuit 118 which is arranged to be conductive when the voltage at junction 104 is below a predetermined value. A transistor T 1  is connected as an AND gate, and is switched to a conductive state to energize lamp 122 only when both trigger circuits 92, 118 are in a conductive state. The control circuit also contains lamp 128 to indicate the state of readiness of a flash circuit. A switch S 3  is operated upon insertion of a photo-flash apparatus on the camera so as to place a fixed resistor 126 in circuit with capacitor 100 to thus provide a fixed exposure time, and so as to connect one contact of lamp 128 to the battery 90. The other lamp contact is connected to the other battery terminal via a switch S 4  which is open only when it senses the presence of a flashbulb that is in condition for firing. When the camera is used with photo-flash apparatus, the aperture can be adapted for coupling with the focusing mechanism.
Patent GB-729498-A (GB)
Title: Improvements in and relating to radio receiver circuits
Inventor: CHRISTIE IAN STANLEY
IPC: H03K9/02
Filed: 1952-11-19
Abstract: 729,498. Radio receiving circuits; pulse radar. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 3, 1953 [Nov. 19, 1952], No. 29230/52. Classes 40 (5). and 40 (7). In a diode detector circuit for pulse, signals the linear part of the diode characteristic is caused to pass through the origin by applying. to the earthy end of the load resistor 2 a compensating pulse of fixed amplitude simultaneously with the signal pulse. The compensating pulse is applied across an additional resistor 4. The arrangement may be used in a radar system, for rendering the detected pulses strictly proportional to the received reflected pulses, the compensating pulses being derived from an adjustable gating circuit through which the received signals are passed to the video amplifier.
Patent GB-1081763-A (GB)
Title: Pesticidal compositions
Inventor: SUMMERS LINDSAY ANDERSON
IPC: C07D271/113
Filed: 1963-07-24
Abstract: A process of protecting plants against attack by pests (e.g spider mites) comprises treating the plants with a pesticidal 4-aryl-1,3, 4-oxadiazol-5-one.  The pesticide may be employed in a composition comprising (a) a liquid diluent and a surface active agent or (b) a solid diluent.  Thus, the pesticide and the surface active agent may be dissolved in dimethyl formamide, dimethyl sulphoxide, dioxan, acetone (with or without diacetone alcohol), or methyl "Cellosolve" and the resulting solution agitated with water to give an emulsion or dispersion.  Suitable solid diluents are kaolin, fuller's earth, gypsom, salt, Hewitt's earth, calcined magnesia, tricalcium phosphate, china clay and talc.  Specified pesticides include 4-aryl-1,3,4-oxadiazol-5-ones in which the aryl group is phenyl, betanaphthyl, 4-methoxyphenyl or 3,5-dichlorophenyl.  The compositions are also toxic towards aphids, mosquito larvae, mustard beetles and house flies.
Patent GB-257792-A (GB)
Title: Improvements in variable change speed friction gear
IPC: F16H15/22
Filed: 1925-11-21
Abstract: 257,792. Tallis, R. W. Nov. 21, 1925. Variable-speed gearing of the kind in which an intermediate friction member 14, Fig. 1, is transversely movable between twin driving and driven members 8, 9 and 10, 11 respectively, is modified so that a common compensating member 20 engages each half of the divided members and exerts equal thrusts upon them. The two compensating members 20 may be in the form of laminated springs which, as the gear member 14 is displaced to vary the speed, pivot about medial adjustable screws 22. The member 14 may be doubly coned as shown in Fig. 1, the twin members 8 - - 11 having projecting gear rims 12 of constant effective diameter. Alternatively as shown in Fig. 5, the intermediate member 34 may have rims 12 of constant gear diameter and the twin members may be conical and of variable effective diameters. In either case the twin members have central projections 24 extending towards one another which may abut as shown in Fig. 5 to disconnect the drive. Control is effected by a forked lever 15 straddling the intermediate member 14 or 34 and pivoted on the floor of gear casing 5.
Patent GB-784608-A (GB)
Title: Manufacture of oximes of cycloaliphatic ketones
Filed: 1953-10-23
Abstract: Cycloaliphatic ketoximes are prepared by bringing together at a temperature below 50 DEG  C. in an aqueous medium a water-soluble salt of a secondary nitro-cycloaliphatic hydrocarbon containing up to 20 carbon atoms and a water-soluble salt of thio sulphuric acid and/or a water-soluble salt of a polythionic acid, and also an acid in such a quantity that a neutral to acid solution is produced, the nitro compound and the salt of thiosulphuric acid and/or polythionic acid being used in the proportion of 1 mol. of nitro compound to 1 to 1 1/4 mols. of the salt of thiosulphuric acid and/or salt of polythionic acid.  Preferably, the acid is added rapidly to an aqueous solution of the reagent; with the more stable polythionates, the required acid and the polythionate may be mixed together at a low temperature and the salt solution of the nitrocompound then added. Reference is made to the use of di-, tri-, tetra-, penta- and hexa-thionates.  If desired, there may be added to the reaction mixture before or after introduction of the acid, a small amount of hydroxylamine or a salt thereof or a mixture of compounds yielding hydroxylamine under the reaction conditions, e.g. a mixture of sodium nitrite and sodium bisulphite with improvement in yield of the ketoxime.  In examples: (1) aqueous hydrochloric acid cooled to - 10 DEG  C. is rapidly added to a stirred solution of sodium thiosulphate (1.2 mols.) and the sodium salt of nitrocyclohexane (1 mol.) at 0 DEG C.; the pH is thereafter adjusted to 6-7 and the oxime extracted with ether; (2) as in (1) aqueous hydroxylamine hydrochloride solution being added after the acid addition; (3) aqueous hydrochloric acid is added to a cooled solution of sodium trithionate (about 1.1 mol.) and then an aqueous solution of nitro-cyclohexane sodium salt (1 mol.) is added and the reaction mixture is worked up as before.  Specification 738,888 is referred to.
Patent GB-1508803-A (GB)
Title: Electric batteries
IPC: H01M10/39
Filed: 1974-07-03
Abstract: 1508803 Batteries of solid electrolyte cells INDUSTRY SECRETARY OF STATE FOR 25 June 1975 [3 July 1974] 29550/74 Heading H1B A battery comprises a group of sodiumsulphur cells nested one within the other. As shown two cells are connected in series by a common bipolar stainless steel electrode 4. The first cell consists of a molybdenum current collecting rod 9, the end 26 of which forms the positive terminal and is provided with a hole through which liquid sulphur is fed to impregnate graphite felt in a space 10. Liquid sodium is fed to a space 6, surrounding a #-alumina electrolyte tube 1, via a filling tube 29. The wetting of the electrolyte by the sodium is assisted by a wire mesh wick 31. A similar cell surrounds the first cell and is provided with a liquid sulphur filling tube 27 and a liquid sodium filling tube 30, the tubes being sealed by crimping and welding when the battery has been filled. The electrode 4 and an outer, low alloy steel case 7 have portions 12 and 19 respectively of a nickel-iron alloy, which portions are sealed to an alpha-alumina end plate 17 by glass frit seals 15. The graphite felt in spaces 5, 10 is capped with alpha-alumina spacers 13, 22. In a modification the filling tubes in the end plate are omitted. An arrangement of four nested, series connected cells as well as a parallel connection of two nested cells is also described. Alternatively some of the cells may be series connected and others in parallel in the same battery.
Patent GB-159587-A (GB)
Title: Improvements in the neutralisation of fatty acids in fats and oils
IPC: C11C3/04
Filed: 1919-11-28
Abstract: The free fatty acids contained in oils or fats are neutralized by heating the oil or fat in vacuo or in a current of neutral gas with the equivalent amount of the mono- or a mixture of the mono- and di-glycerides of the fatty acids.ALSO:The free fatty acids contained in oils or fats are neutralized by heating the oil or fat in vacuo or in a current of neutral gas with the equivalent amount of the mono- or a mixture of mono- and di-glycerides of the fatty acids, prepared for instance by the process described in Specification 163,352.
Patent GB-1157204-A (GB)
Title: Improvements in or relating to Recording and/or Reproducing Apparatus Employing a Tape as an Information Carrier
IPC: G11B15/60
Filed: 1967-06-28
Abstract: 1,157,204. Tape recording &c. apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 28 June, 1967 [1 July, 1966], No. 29777/67. Heading G5R. A member 8, such as a brake block or transducer, having a surface 12 to engage a tape in use is supported by one end 9 of a leaf spring 10 whose other end is attached to a fixed support 11, the ends of the spring 10 being symmetrical about a plane X-X which extends at right angles to the direction of travel of the tape and which divides the surface 12 into two equal parts, and the main axis of the spring 10 lying in a plane perpendicular to the plane XX and the tape and which also divides the surface 12 into two equal parts. An electromagnetically operated brake block 8 is shown. In a modification (Figs. 4, 5, not shown) a brake block (8) is attached to the outer arms of a generally W-shaped leaf-spring (16). The position of the member may be adjusted by a spring assembly acting at its centre (not detailed).
Patent GB-852746-A (GB)
Title: Improvements in or relating to transistor circuits
IPC: H03F1/30
Filed: 1957-09-23
Abstract: 852,746. Transistor circuits. FERNSEH, G.m.b.H. Sept. 23, 1957 [Sept. 22, 1956], No. 29785/57. Class 40(6). A transistor circuit comprises a resistor of ohmic type disposed so that its temperature is determined by that of the transistor and having such a temperature coefficient as to vary the base current of the transistor in a manner which maintains the collector current constant. The resistor may. be of copper wire wound directly on the transistor envelope or on a former which constitutes the mounting for the transistor. In Fig. 2 the resistor 12 is arranged in a bridge formation of biasing resistors 14, 15, 16, 17, 18 while in Fig. 1 (not shown) it is arranged in one arm of a potentiometer supplying the bias for the base electrode and connected across the collectoremitter supply. The load 23 may be a relay.
Patent GB-519351-A (GB)
Title: Systems for indicating the direction of propagation of electro-magnetic waves
IPC: G01S1/02
Filed: 1938-10-14
Abstract: 519,351. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. Oct. 14, 1938, No. 29839. Convention date, Nov. 6, 1937. [Class 40 (v)] In a directional system in which the voltage from a rotating frame aerial produces a polar diagram on the fluorescent screen of a cathoderay tube, switching means is provided for adding the effect of a vertical aerial to that of the frame and to give a second polar diagram on the screen, in order to indicate the " sense " as well as the direction of the distant transmitter. As shown in Fig. 1, the frame aerial C is driven synchronously with a deflecting coil B<2> by a motor M. A permanent magnet B<1> is also driven at the same speed to produce a circular trace e, Fig. 2. The combination of the two applied voltages gives a curve a, Fig. 2, or b, Fig. 3, according to the amplitude of the received signal, both curves indicatng direction. By closing a switch K, to add the voltage from a non-directional aerial A, the luminous trace takes the form c, Fig. 2, or d, Fig. 3, both of which lie to one side or other of the pointer curves a or b, and so give an indication of sense." The circular time-base e may be produced as shown in Fig. 4, where the motor M drives two wipers over a circular potentiometer P. The voltage from the wipers is applied through a switch K<1> to either of the two pairs of deflecting coils B<1> and B<2>, or B<2> and B<3>. If the switches K and K<1> are ganged together, and operated rapidly, the curve c of Fig. 2 is displaced to the position shown in Fig. 5 and both a and c can be observed simultaneously. In Fig. 6 the rotating field is supplied from a diphase generator G, the voltage from which is applied to the control grids of'two modulator valves VI and Ve, whilst the output from the receiver R is applied in parallel to the two outer grids. A monophase generator may be used in combination with a single valve, Fig. 7 (not shown) for the same purpose, or the plate current from a single valve may be split into two phases by a resistance-capacity circuit. According to the Specification as open to inspection under Sect. 91, signal voltage from a frame aerial C, Fig. 1 (Cancelled), which is constantly rotated by a motor M is combined with that from a vertical aerial A and is fed through a synchronously driven switch K and a phase-splitting device D to the deflecting coils B\ B<2> of the cathode-ray tube T. The circular trace formed on the screen is thus brought to the centre periodically, the radial line so formed showing the bearing. Alternatively, a local oscillator supplies one pair of the deflecting plates of the cathode-ray tube, whilst the combined signal voltage from the frame and vertical aerials is fed through a phase-splitter to the second pair of deflecting plates, thereby forming a straight-line trace which indicates the bearing line. This subject-matter does not appear in the complete Specification as accepted.
Patent GB-463577-A (GB)
Title: Improvements in or relating to cigarette making machines
IPC: A24C5/28
Filed: 1935-10-29
Abstract: 463,577. Cigarette-making machines. RUAU, F. F., and MOLINS MACHINE CO., Ltd. Oct. 29, 1935, No. 29843. [Class 130] [Also in Group VIII] A device. for severing an axially moving cigarette or other rod into lengths comprises a member rotatable about a fixed axis and restrained against lengthwise movement, a carrier for a cutting element which rotates with said member, the edge of the cutting element being transverse to the fixed axis, a resilient connection between the carrier and the member, and means other than cam-operated means for moving the carrier lengthwise of the fixed axis during revolution about the axis. As shown, a carrier 26 for a rotary knife 27 is connected by a resilient arm 14 to a rotating shaft 5, and is reciprocated lengthwise of the shaft 5 by a connecting element 13 pivoted about a cross spindle 12 at the end of the shaft 5. The element 13 comprises two parts connected by bridge pieces 17 carrying pivot pins 18, which enter the arms 19 of a member 20 on an inclined shaft 21. The resilient arm 14 comprises a number of leaf springs, and the knife carrier 26 is driven by a belt 30 passing over pulleys 28, 29 on the shaft 5 and the carrier 26 and over tensioning pulleys, two of which are supported on an arm 35 adjustably supported on a counterweight 34 which balances the knife carrier. The knife co-operates with a ledger tube 37, and grinding elements 40 are provided. The knife carrier is adjustable to compensate for wear, and the lengths of rod to be cut are adjusted by adjustment of the bearing 22 of the inclined shaft 21. Specification 452,180 is referred to in the Complete Specification and Specification 248,415, [Class 130], in the Provisional Specification.
Patent GB-239157-A (GB)
Title: Water cooled internal combustion engines
IPC: F02B19/14
Filed: 1924-12-13
Abstract: 239,157. Schiffswerft Linz Akt.-Ges. Aug. 27, 1924, [Convention date]. Void Published under Sect. 91 of the Act]. Cylinders receiving liquid fuel.-Fuel is injected into a water-cooled combustion chamber 4 so that the axis of the cone of dispersion 12 passes approximately through the centre of the chamber, which is connected with the cylinder by an opening 15, so arranged that the axis of the body of air entering the chamber also passes through the centre of the chamber. The invention is applicable to both four- and two-strode engines and to engines employing gaseous instead of liquid fuel..
Patent GB-899345-A (GB)
Title: Improvements in or relating to straight bar knitting machines
Inventor: MCCARTHY PATRICK GIDEON
IPC: D04B11/00
Filed: 1957-09-25
Abstract: 899,345. Knitting-machines. COTTON Ltd., WILLIAM. Sept. 15, 1958 [Sept. 25, 1957], No. 30033/57. Class 74 (2). To reduce the impact at the ends of the carrier bar traverse, the friction box 3 and thereby the carrier bar 2 are retarded by causing the friction box to engage stops on a slow moving bar 8 towards each end of the carrier bar movement. The carrier bar then proceeds at the slow moving rate of the bar 8 until arrested by its end stops 5, 5<SP>1</SP>. The bar 8 is driven at about an eighth of the speed of the friction bar 1 driving the friction box 3. The stops of the bar 8 comprise slides 9 which are coupled to the bar 8 upon impact of the box 3 with levers 16. A lever 16 is pivoted to each of the normal carrier bar stop boxes 6 and when engaged it is urged to turn against a roller 15 on the associated slide such that the slide moves along the bar 8 until a ball or roller 10 contained within the slide wedges itself between the bar and an inner surface of the slide 9. When this occurs the slide 9 and bar 8 are coupled together and further pivoted movement of the lever 16 gradually retards the movement of the carrier bar until it is travelling at the speed of the bar 8. The carrier bar then proceeds at this reduced speed until it engages its end stops, whereupon further movement of the bar 8, which, as well as the friction bar 1, is also driven from the draw mechanism, urges the ball or roller out of its wedging engagement and the slide is uncoupled. Simultaneously, a cam arm 13 is operated to restrict the movement of the ball or roller to prevent its engagement on the reverse movement of the bar 8 when the draw is in the opposite direction and this cam arm is maintained in an operative position until the draw is once again reversed.
Patent GB-819536-A (GB)
Title: Electrical controllers
Inventor: WHEELER THOMAS ARTHUR
IPC: G05B5/01
Filed: 1956-10-03
Abstract: 819,536. Automatic temperature and pressure control systems. ETHER Ltd. Oct. 3, 1956, No. 30101/56. Addition to 817,053. Class 38 (4). The fuel supply to a furnace or boiler is controlled by an electrical galvanometer or the like 2 responding to rise in its temperature or pressure by moving a vane 1 to interrupt light falling on a phototransistor 3, the fall in collector current of which through a relay 10 operates switch C5-C7 to energize electromagnets reducing the fuel supply. The relay 10 also has switch contacts C3 and C4 which open to break a bias supply circuit for the transistor base b, and hence the transistor current through relay 10 is increased; this arrangement prevents overshoot of temperature or pressure.
Patent GB-331153-A (GB)
Title: Improvements relating to rotary pumps or compressors
IPC: F04C2/44
Filed: 1929-10-04
Abstract: 331,153. Poirmeur, L. I. Oct. 5, 1928, [Convention date]. Fixed-abutment type; packing vanes. - An eccentrically disposed rotor 2 has vanes 5 and 6 hinged to its periphery, the former pumping fluid which enters an inlet port 3 to a delivery port 4, and the latter acting as packing pieces between the two ports. Leather packing strips 7 are fixed to the vanes, and leather cheeks or the like, may be provided on the rotor ends. Grooves 10 are cut in the stator walls. The stator may be lined. In a reversible pump the vanes 5 and 6 are of equal length.
Patent GB-463805-A (GB)
Title: Improvements in or relating to injection pumps
IPC: F02M59/02
Filed: 1935-10-31
Abstract: 463,805. Fuel-injection pumps. PUURMANN, J. Oct. 31, 1935, No. 30118. Convention date, Oct. 31, 1934. [Class 102 (i)] [Also in Group XXVI] A fuel-injection pump is actuated by a cam 3 engaging a roller 4 mounted on a lever 6 fulcrumed at 7. A lever 5 is pivoted on the pin 4a and rests on fulcrum piece 10 which may be moved horizontally by the link 9 to vary the stroke. Through the member 12, the plunger 13 rests on the lever 5. The plunger has grooves 23 and ports 22 are supplied with lubricant through the non-return valve 25. Alternatively, the cylinder may be provided with the grooves 23 in which case the upper groove is connected to the port 20. The grooves 23 may be connected by fine grooves or may themselves be of helical form.
Patent GB-911326-A (GB)
Title: Picture book
IPC: B42D3/12
Filed: 1960-09-02
Abstract: 911,326. Books with composite pictures. THIEBES, M., [trading as WESTFAELISCHE VERLAGSANSTALT THIEBES & CO.]. Sept. 2, 1960 [Sept. 2, 1959], No. 30258/60. Classes 11 and 16. A picture book comprises four sheets 2 which are joined in concertina manner and depict representations of the movement of a raven, each representation being characterized by a number of outlines 4 which are arranged in different positions on the sheets to indicate movement. Self-adhesive coloured paper stickers, Fig. 4, are provided to cover the outlines in the sequence of the numbers 7. The two central sheets 2, which may be of cardboard or plastic material, are joined together by removable fasteners 8 to form a pocket open on the spine 9 to provide storage space for the stickers.
Patent GB-341001-A (GB)
Title: Improvements in making a mixture of water gas and producer gas
IPC: C01B3/02
Filed: 1929-10-07
Abstract: 341,001. Mixing fluids in flow. POWER-GAS CORPORATION, Ltd., Stockton-on-Tees. Oct. 7, 1929, No. 30325. [Class 86.] A mixture of water gas and producer gas is made by controlling the output of the producer gas plant by the volume of gas flowing from the water gas plant. One form of regulating device is shown and comprises a valve 27 in the main 13 the valve being operated by a pair of diaphragms 25, 26 the opposite sides of which are subjected to pressure differences on the sides of restrictions 20 and 21 in the pipes 13 and 14. The valve 27 may be placed in the air supply to the producer. The apparatus may be arranged to by-pass the producer gas when the water gas plant is on the blow period, or a number of water gas plants running in different phases may be provided.